"""
If the only thing that leaves you unsatisfied is the explanation as to the delayed public disclosure...
"""
Seven months delayed public disclosure. Sure, they had excuses in hand, carefully worded by Red Hat's PR department and approved by Red Hat Legal. But other distros, Debian for example, don't seem to have that "can't do" attitude exhibited by Fedora under similar circumstances, and don't seem to need the carefully worded excuses. And no, there is really no way to know if what was (finally) disclosed was the full truth. Any presumed confidence one might have had of that was lost sometime between August and March.
"""
...I'm not going to be able convince you otherwise.
"""
As long as there are such clear examples of other distros executing responsible and timely disclosure, in contrast to Fedora's behavior, I'm quite sure you won't. I guess we'll just have to see what happens next time Fedora's infrastructure gets hacked.